1.1: hydrogenchloride; water / 1,4-dioxane / 1 h / 20 °C 2.1: potassium carbonate; sodium iodide / acetonitrile / 40 h / |Reflux 3.1: anhydrous iron chloride; 4-(N,N-dimethlyamino)pyridine; di-tert-butyl peroxide / 1,2-dichloro-ethane / 18 h / 60 °C / |Inert atmosphere 3.2: 1 h / 20 °C View Scheme